Does external exposure to certain drugs, like marijuana or crack smoke, affect the TestCountry Hair Drug Test results?

TestCountry Hair Drug Testing looks for the metabolite by-product of drug ingestion that is deposited inside the hairshaft by the bloodstream. For example, to rule out the possibility of external contamination for marijuana smoke creating a false positive, hair drug testing utilized detects only the metabolite (THC-COOH). This metabolite is only produced by the body and cannot be an environmental contaminant.



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